package com.itheima.service;

import com.alibaba.dubbo.config.annotation.Service;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.itheima.dao.PermissionDao;
import com.itheima.dao.RoleDao;
import com.itheima.dao.UserDao;
import com.itheima.entity.PageResult;
import com.itheima.entity.QueryPageBean;
import com.itheima.pojo.Menu;
import com.itheima.pojo.Permission;
import com.itheima.pojo.Role;
import com.itheima.pojo.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 * 用户服务
 */
@Service(interfaceClass = UserService.class)
@Transactional
public class UserServiceImpl implements UserService {
    @Autowired
    private UserDao userDao;
    @Autowired
    private RoleDao roleDao;
    @Autowired
    private PermissionDao permissionDao;
    //根据用户名查询用户信息,包括用户的角色和角色关联的权限
    public User findByUsername(String username) {
        User user = userDao.findByUsername(username);//根据用户名查询用户表
        if(user == null){
            return null;
        }
        Integer userId = user.getId();
        //根据用户id查询关联的角色
        Set<Role> roles = roleDao.findByUserId(userId);
        if(roles != null && roles.size() > 0){
            //遍历角色集合，查询每个角色关联的权限
            for (Role role : roles) {
                Integer roleId = role.getId();//角色id
                //根据角色id查询关联的权限
                Set<Permission> permissions = permissionDao.findByRoleId(roleId);
                if(permissions != null && permissions.size() > 0){
                    //角色关联权限集合
                    role.setPermissions(permissions);
                }
            }
            //用户关联角色集合
            user.setRoles(roles);
        }

        return user;
    }

    /**
     * 用户管理分页查询
     *
     * @param pageBean
     * @return
     */
    //分页查询
    public PageResult findPage(QueryPageBean pageBean) {
        Integer currentPage = pageBean.getCurrentPage();
        Integer pageSize = pageBean.getPageSize();
        String queryString = pageBean.getQueryString();
        PageHelper.startPage(currentPage,pageSize);
        if (queryString != null){
            Page<User> page = userDao.findByCondition(queryString);
            return new PageResult(page.getTotal(),page.getResult());
        }
        //使用分页助手插件实现分页查询
        Page<User> page = userDao.findAll();

        return new PageResult(page.getTotal(),page.getResult());
    }

    public void add(User user, Integer[] roleIds) {
        userDao.add(user);
        Integer userId = user.getId();
        this.setUserAndRole(userId,roleIds);
    }

    public void setUserAndRole(Integer userId,Integer[] roleIds){
        //设置多对多关系
        if(roleIds != null && roleIds.length > 0){
            for (Integer roleId : roleIds) {
                Map<String,Integer> map = new HashMap<>();
                map.put("userId",userId);
                map.put("roleId",roleId);
                userDao.setUserAndRole(map);
            }
        }
    }

    @Override
    public User findById(Integer id) {
        return userDao.findById(id);
    }

    public void edit(User user, Integer[] roleIds) {
        //基本信息修改
        userDao.edit(user);
        //清理检查组和检查项的关联关系（操作中间关系表）
        userDao.deleteAssociation(user.getId());
        //重新建立检查组和检查项的关联关系
        this.setUserAndRole(user.getId(), roleIds);
    }


@Override
        public List<Menu> findMenu(String username){
            //找的是所有一级菜单
            List<Menu> menu = userDao.findMenu(username);

            for (Menu menu1 : menu) {
                //获取父IDfindMenu
                Integer id = menu1.getId();
                //传入用户对应的父ID的子菜单集合
                List<Menu> children = userDao.findchildren(id, username);
                //添加给父ID
                menu1.setChildren(children);
            }

       /* List<Integer>  MenuIDs= userDao.findMenuID(username);
        for (Menu menu1 : menu) {
            //获取父ID
            Integer id = menu1.getId();
            //传入用户对应的父ID的子菜单集合
            List<Menu> children=userDao.findchildren1(id,MenuIDs);
            //添加给父ID
            menu1.setChildren(children);
        }*/


            return menu;
        }
    }


